EP 4116447 A4 20230920 - LITHIUM-CONTAINING SOLUTION PRODUCTION METHOD
Title (en)
LITHIUM-CONTAINING SOLUTION PRODUCTION METHOD
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER LITHIUMHALTIGEN LÖSUNG
Title (fr)
PROCÉDÉ DE PRODUCTION DE SOLUTION CONTENANT DU LITHIUM
Publication
Application
Priority
- JP 2021059031 A 20210331
- JP 2022015851 W 20220330
Abstract (en)
[origin: EP4116447A1] Provided is a method for producing a lithium-containing solution that allows increasing a content rate of lithium in a solution after an eluting step, and suppressing an amount of an eluted solution used in a process after the eluting step, thus suppressing production cost of lithium.A method for producing a lithium-containing solution includes an adsorption step of bringing a lithium adsorbent obtained from lithium manganese oxide in contact with a low lithium-containing solution to obtain post-adsorption lithium manganese oxide, an eluting step of bringing the post-adsorption lithium manganese oxide in contact with an acid-containing solution to obtain an eluted solution, and a manganese oxidation step of oxidating manganese to obtain a lithium-containing solution with a suppressed manganese concentration. The adsorption step, the eluting step, and the manganese oxidation step are performed in this order, and the acid-containing solution includes the eluted solution with acid added. The method allows the usage amount of the acid in the eluting step to be suppressed, the content rate of lithium in the eluted solution after the eluting step to be increased, and thus the production cost of the lithium-containing solution to be suppressed.
IPC 8 full level
C22B 26/12 (2006.01); B01D 15/36 (2006.01); C01G 45/00 (2006.01); C01G 45/02 (2006.01); C01G 45/12 (2006.01); C22B 3/24 (2006.01); C22B 3/44 (2006.01)
CPC (source: EP US)
B01D 15/362 (2013.01 - EP); B01J 39/02 (2013.01 - US); B01J 39/10 (2013.01 - US); B01J 49/53 (2017.01 - US); C01D 15/04 (2013.01 - US); C01G 45/003 (2013.01 - EP); C01G 45/02 (2013.01 - EP); C01G 45/1221 (2013.01 - EP); C22B 3/24 (2013.01 - EP); C22B 3/44 (2013.01 - EP); C22B 26/12 (2013.01 - EP); C01P 2006/80 (2013.01 - EP); Y02P 10/20 (2015.11 - EP)
Citation (search report)
- [Y] US 2019044126 A1 20190207 - SNYDACKER DAVID HENRY [US], et al
- [Y] WO 2020116607 A1 20200611 - SUMITOMO METAL MINING CO [JP]
- [A] EP 2644720 A1 20131002 - KOREA INST GEOSCIENCE & MINERA [KR]
- [A] CN 100343399 C 20071017 - QINGHAI SALT LAKE INST CAS [CN]
- See also references of WO 2022210847A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4116447 A1 20230111; EP 4116447 A4 20230920; AR 125601 A1 20230802; AU 2022250148 A1 20230119; AU 2022250148 B2 20240314; CL 2023000842 A1 20231013; CN 115667558 A 20230131; JP 2022155680 A 20221014; JP 7124917 B1 20220824; US 2023174385 A1 20230608; WO 2022210847 A1 20221006
DOCDB simple family (application)
EP 22777584 A 20220330; AR P220100732 A 20220328; AU 2022250148 A 20220330; CL 2023000842 A 20230323; CN 202280004280 A 20220330; JP 2021059031 A 20210331; JP 2022015851 W 20220330; US 202217923111 A 20220330